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sonikudi sonikudi
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11 years ago
what causes the QRS complex and the T wave of the EKG?
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Educator
11 years ago
The P wave results from impulse conduction from the SA node through the atria. The QRS complex results from ventricular depolarization and precedes ventricular contraction. Its shape reveals the different size of the two ventricles and the time required for each to depolarize. The T wave is caused by ventricular repolarization.
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